Special topic on precession, nutation, and libration driven flows.

This special issue of Physics of Fluids focuses on the dynamics of fluid layers enclosed in cavities that undergo precession, nutations, and librations. The study of these fluid dynamics has been of interest since the late nineteenth century, with applications in fields such as geophysics and industrial contexts. The collection of articles in this special issue resulted from online meetings during the pandemic, bringing together experts from different communities to explore the fundamental physics underlying these dynamics. The articles cover topics such as resonant and non-resonant dynamics, non-linear regimes, mixing in precessing cavities, and the design of precessing mixers. Additionally, the issue includes discussions on laboratory-scale precessing dynamos and the construction of a novel experiment using a precessing cylindrical cavity filled with liquid sodium. The guest editors dedicate this special issue to one of the contributors, Stijn Vantieghem, who passed away. [Extracted from the article]